Super Sixteen build support thread

Creator of of the Super Sixteen Sequencer and based in San Francisco. This is a DIY and Finished Good product for Eurorack.

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extralifedisco
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Super Sixteen build support thread

Post by extralifedisco » Wed Oct 07, 2020 4:34 pm

super-sixteen-module-med.jpg

Hello friends! This an official thread to post questions, troubleshooting requests, and tips on building the Super Sixteen eurorack sequencer. If you are just starting your build, please refer to the official build guide and walkthrough video




When posting help requests, please include the following:
  • A detailed description of the issue or question
  • The status of your board - what you've assembled so far
  • What tests you have performed
  • Clear, high-res photos of both sides of your PCB (if applicable)
Happy soldering!

Polysilicon
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Re: Super Sixteen build support thread

Post by Polysilicon » Wed Oct 07, 2020 5:08 pm

Just got my board in last week and have had the parts lying around for a bit. I'll probably start the build sometime later this month and I'll make sure to post any questions here.

Thanks!

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Re: Super Sixteen build support thread

Post by AndrewM » Wed Oct 07, 2020 11:39 pm

So I was following the build guide, which seems to agree with the video, when I got to the LEDs. I followed the directions in the written guide about putting the hex nuts on the top & bottom potentiometer, left and right CV jacks, and the screw into the standoff, and then put tape over the LED holes.

Unfortunately, after soldering all of the LEDs, when I went to seat the panel, it turns out that the 3mm LEDs from the BOM don't fit fully through the holes (meaning the tape for the 3mm LEDs wasn't necessary), and even worse, the panel is now permanently offset further from the board. As a result, the nuts on the pots and jacks barely have any purchase on the threads, there's now a gap between the the 7-segment display and the panel, (which came at an early stage in the build guide PDF), and the jacks are also no longer flush against the panel, which was called out in step 2.7 of the guide as being important.

I think the idea was good for the 5mm LEDs, but I won't know until I desolder and clean up all 16 of the 3mm LEDs so I can get the panel to sit at the correct height again. (EDIT: yeah, it worked out well for the 5mms at least; thankfully I could just heat+loosen the 3mms and push them back towards the board, then was able to install the panel and then heat+adjust them flush with the panel before soldering them into place again)

I'm not sure if the 3mm LEDs from the BOM on Digikey are slightly too big, or why this didn't work as planned, but I wouldn't recommend offsetting the panel while installing the 3mm LEDs (section 2.10, steps 3, 4 and 5).

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extralifedisco
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Re: Super Sixteen build support thread

Post by extralifedisco » Thu Oct 08, 2020 1:55 am

Woah, thanks for the thorough report! I think you're right. On my previous panel prototypes the fit was quite loose, and there is probably a bit of variance from panel to panel but on looking at them again this evening I'm finding that the black panels seem to have a very slightly larger cutout for the 3mm LEDs. When placed in without tape they sit proud about 1-2mm. On the metal panels it's much tighter, and the LEDs sit almost flush with the panel. I'll update the build guide to reflect that the spacer trick is not necessary - I had intended it to counteract the slight inset caused by using the tape, but if the fit is that snug then the spacer will only cause the issue you describe and the tape is not needed.

Many thanks for the tip!

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Re: Super Sixteen build support thread

Post by AndrewM » Thu Oct 08, 2020 3:46 pm

extralifedisco wrote:
Thu Oct 08, 2020 1:55 am
I'm finding that the black panels seem to have a very slightly larger cutout for the 3mm LEDs.
Aha, that would do it - I'm using one of the metal panels. Otherwise everything came together really well - it was a really well-written and detailed guide!

Two other very minor things:
  1. on section 2.2, step 1 of the build guide, it mentions that the 100 pF capacitors have a capacitor code of 100, but I believe that should be 101
  2. the end of the video says to stay tuned for a video on calibration, though there's no mention of that in the build guide - is there anything that still needs to be done after assembly & functional testing?

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Re: Super Sixteen build support thread

Post by maglab » Fri Oct 09, 2020 2:15 am

AndrewM wrote:
Thu Oct 08, 2020 3:46 pm
extralifedisco wrote:
Thu Oct 08, 2020 1:55 am
I'm finding that the black panels seem to have a very slightly larger cutout for the 3mm LEDs.
Aha, that would do it - I'm using one of the metal panels. Otherwise everything came together really well - it was a really well-written and detailed guide!

Two other very minor things:
  1. on section 2.2, step 1 of the build guide, it mentions that the 100 pF capacitors have a capacitor code of 100, but I believe that should be 101
  2. the end of the video says to stay tuned for a video on calibration, though there's no mention of that in the build guide - is there anything that still needs to be done after assembly & functional testing?
I have also completed the build. From what I understand there is a calibation video on its way but this was in one of the earlier videos. The voltage seems to jump about on the higher octaves for me so working on that

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extralifedisco
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Re: Super Sixteen build support thread

Post by extralifedisco » Sun Oct 11, 2020 3:57 pm

Hello! I've just uploaded the calibration tutorial video - check it out here. A tuner or a multimeter are required for the most accurate result.


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Re: Super Sixteen build support thread

Post by greenalien » Mon Oct 12, 2020 4:56 pm

IMG_20201012_224812_compress45.jpg
Finished and working!
A few changes from standard spec :
The 17 black push buttons are 5.9mm x 10mm items from Ebay, because Mouser were out of stock, and Digikey etc are v. expensive for small orders. Panel holes enlarged to 6mm, buttons modified by drilling out to 3.3mm dia, and are a nice enough fit that panel can be inverted without them falling out, which is more than I can say for the grey ones, ordered as specified, which each needed a small blob of blu-tak to keep them secure.
I also changed the 16 leds from orange to green, as the bag of orange 3mm ones from Mouser had a split in the bottom and was 5 items short, the missing leds are probably somewhere on the floor of Mouser's distribution centre. I had the green ones in stock, so used them, and they look fine. The fitting tip of using nut spacers and tape to get the leds at the correct level worked well for me.
Very helpful and well thought out build manual, sequencer worked first time. Now looking forward to exploring its possibilities, the online video tutorials are already proving helpful.
Thanks Matthew for a great project!

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extralifedisco
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Re: Super Sixteen build support thread

Post by extralifedisco » Tue Oct 13, 2020 10:15 pm

A few changes from standard spec :
The 17 black push buttons are 5.9mm x 10mm items from Ebay, because Mouser were out of stock, and Digikey etc are v. expensive for small orders. Panel holes enlarged to 6mm, buttons modified by drilling out to 3.3mm dia, and are a nice enough fit that panel can be inverted without them falling out, which is more than I can say for the grey ones, ordered as specified, which each needed a small blob of blu-tak to keep them secure.
I also changed the 16 leds from orange to green, as the bag of orange 3mm ones from Mouser had a split in the bottom and was 5 items short, the missing leds are probably somewhere on the floor of Mouser's distribution centre. I had the green ones in stock, so used them, and they look fine. The fitting tip of using nut spacers and tape to get the leds at the correct level worked well for me.
That looks great in green! You could probably swap out the glide and gate LEDs with green 5mm if you have them laying around for a nice monochrome module. I originally spec'd it for an amber display module to match the LEDs but I found out later that Kingbright's 3-digit displays are not super-common so getting any quantity in yellow/amber was going to be tricky and I went with green instead.

Are you using some other round-plunger tact switches (not the e-switch ones)? I've never tried drilling out the switch caps to work on other switches, that's a clever hack!

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Re: Super Sixteen build support thread

Post by greenalien » Wed Oct 14, 2020 8:56 am

I'm happy to have the 5mm leds in amber, it makes them stand out when they are on, so no plans to change them. Having the 16 sequence leds matching the digital display is nice though.
The tact switches are the standard 6mm x 6mm devices. The square switch post measures 3.4 mm diagonally, while the circular collar under it measures 3.5mm diagonally, so using a 3.3mm drill bit works well to enlarge the square holes in the caps, a 3.2 would probably be as good. The caps push on, rather than clicking into place, but seem to hold well enough.
Just watched the 2 programming videos, they are very helpful, thanks.

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Re: Super Sixteen build support thread

Post by autodafe » Sun Oct 18, 2020 10:19 am

just got my PCB/Panel yesterday, starting sourcing components and building this! ;-)

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Re: Super Sixteen build support thread

Post by mightycoco » Tue Oct 20, 2020 8:19 am

Just built the little guy.

I first went to calibration and found that each step only gives 0.5-0.6v/oct...
Step 1: ~0V
Step 2: ~0.5V
Step 3: ~1.1V
Step 4: ~1.6V
...

Should CV output something? Because, thats plain 0V.

Any ideas?

-------

EDIT: OK: I screwed up R113/R114. No CV is OK?
Nice, glad you found the culprit. The CV output is uncalibrated. It should have a linear range from 0-8v, but as the control resolution is not fine enough to require calibration it's not on in calibrate mode. You can just test it sequence mode by hooking it up to any CV input and recording in some sequence data for it.

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Re: Super Sixteen build support thread

Post by Gleekzorp » Wed Oct 21, 2020 5:14 am

Hi folks, kind of a modular newbie here, building this puppy as well. Bought a Behringer 19" eurorack with power supply to house it (it is my first eurorack build), only to find out the Behringer powercable doesn't match the one on the processor board (16 pin instead of 10). Matthew says: "You can just use a standard 16-pin to 10-pin cable (with 6 pins unconnected). Make sure you put the red stripe on the -12v side", so that is what I'll do tonight.

Very anxious to find out if it works first time, but even if not, it has been a hugely enjoyable and very well documented built; thanks Matthew!

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Re: Super Sixteen build support thread

Post by Gleekzorp » Sun Oct 25, 2020 5:51 am

Gleekzorp wrote:
Wed Oct 21, 2020 5:14 am
Very anxious to find out if it works first time, but even if not, it has been a hugely enjoyable and very well documented built; thanks Matthew!
And yes! It did work first time :yay:
Next: Eurorack VCO etc. (I started my modular adventure with the Super Sixteen!)

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